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Sig Mayhem 3D ARF

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Sig Mayhem 3D ARF

Old 06-30-2004, 03:00 PM
  #251  
rcflier_gi
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Default RE: Sig Mayhem 3D ARF

I had my battery mounted in the rear fuse about 4" behind the wing. With it there the plane balanced just at the edge of the 3D range listed in the manual.
Old 07-07-2004, 10:57 AM
  #252  
cstevec
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Default RE: Sig Mayhem 3D ARF

Was teaching my son to land on Fridat and after 6 perfect landings he went long and taxied the plane into a pallet. Busted the sheeting and the main spar in the right wing. Luckily it shouldn't be too much work to fix. Great plane to teach people to fly with, he was landing like a real pro. 'secially considering it is tail heavy and we had a small (5-10 mph) crosswind.
Old 07-07-2004, 11:18 AM
  #253  
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Default RE: Sig Mayhem 3D ARF

Got the first flight on mine this past weekend , This plane will do 3d well and land like a big trainer,. I burn 2/3 of a gal. of 30% . I have a os 91 4 stroke with pump, 15x6 apc prop.
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Old 07-08-2004, 10:15 AM
  #254  
djlyon
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Default RE: Sig Mayhem 3D ARF

10 flights on my Mayhem. Webra 120 17/6 APC MMMMMMMM good
Old 07-27-2004, 10:27 PM
  #255  
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Default RE: Sig Mayhem 3D ARF

Anyone have any pics of there mayhem with two elvater servos....
Old 07-31-2004, 06:53 AM
  #256  
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Default RE: Sig Mayhem 3D ARF

Here's what I did.
Old 07-31-2004, 07:03 AM
  #257  
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Default RE: Sig Mayhem 3D ARF

Oops, I forgot the pics.

Notice I added some hardwood under the servo mounts on both servos to get the pushrod perpendicular to the elevators (and the futher aft the less depth for the servo).
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Old 08-20-2004, 06:12 PM
  #258  
LSP972
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Default RE: Sig Mayhem 3D ARF

Is that a battery hatch (the red plate) on the bottom of the fuse ahead of the servos and tail wheel?
Old 08-21-2004, 05:52 AM
  #259  
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Default RE: Sig Mayhem 3D ARF

Steve,

Yes, I mounted a 1650 mah 5-cell nickel metal battery in the aft fuse. Instead of making a hatch, I secured the battery with some hard balsa sticks glued to structure and zip tied the battery to the sticks. I covered the hole with red Ultracote (didn't have any white). In addition to the extra 9202 elevator servo, I still needed more weight to offset my 33 oz. Enya R120 GP. Also, I wound up cutting the hardwood elevator interconnect to seperate each half - my servos were buzzing at neutral (slightly fighting each other after using subtrim to rig each elevator half to a perfect neutral). I guess I had a some twist between the 2 halves with the stock set up. I don't remember what the CG is, but it's towards the aft range.

Gbee
Old 09-09-2004, 06:33 PM
  #260  
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Default RE: Sig Mayhem 3D ARF

Is this thred dead?

I've got about 25 flight on my Mayhem (Enya R120GP) mounted inverted with my home made light-weight onboard glow. It idles at 1700 rpm with an APC 17x4W. My cg is aft - I don't remember the measurement, but I did write it on the instruction manual which I can't find. Anyhow, I have mixed feelings about the Mayhem. It flies amazingly slow and lands even slower - definately a good thing. BUT mine does not have good rudder authority even with a Futaba S9402 servo on 6 volts using the stock pull pull setup. I need full rudder to do halfway decent flat turns and knife edge. It'll knife edge loop but needs a lot of vertical sky to do it. The engine is plenty powerful with good vertical ascent from a botched hover. I've got the recommended 3D throw for travel with maybe 40% expo. I also fly the UCANDO 60 with a Saito 100. My experience is the UCD has better rudder authority but worse coupling. I think the rudder on the Mayhem is too small but maybe it's just me. Anyone feel the same about the rudder?
Old 09-10-2004, 12:21 PM
  #261  
outssider
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Default RE: Sig Mayhem 3D ARF

if you make these mods....or... if you had made the mods in the first place...you wouldn't have these problems

Post #: 159

http://www.rcuniverse.com/forum/m_14...tm.htm#1704615
Old 09-10-2004, 03:27 PM
  #262  
Gbee
 
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Default RE: Sig Mayhem 3D ARF

outsidder,

How's bout an explanation please. I looked at your pictures and you certainly increased the rudder size. What's your experience with before and after? Did you mod the elevators also or just increase the throw?
Old 09-11-2004, 07:43 PM
  #263  
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Default RE: Sig Mayhem 3D ARF

yes elevators are modified also. the fuse was extended down about 1.5" so the rudder is not just longer at the bottom but extends down to meet the fuse.
Old 09-14-2004, 02:26 AM
  #264  
VanWidick
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Default RE: Sig Mayhem 3D ARF

Yes I painted the inside of the canopy looks great, Put a YS110 on it and has plenty of power for unlimited vertical

The pull pull cables suck bigtime, mine broke after about 5 flights, I would change out the pull pull cable for sure.
Old 09-14-2004, 08:48 AM
  #265  
P-51B
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Default RE: Sig Mayhem 3D ARF

So, for those with the Saito 180 in the nose, how is the Mayhem holding up?
Old 09-14-2004, 11:55 AM
  #266  
outssider
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Default RE: Sig Mayhem 3D ARF

everything holds up well except one area.

the two wooden dowels in the front of the wing don't work well with lots of shacking so I installed a diagonal 1/4 20 nylon bolt in the front of the wing going into the bulkhead that is behind the tank. This holds the front of the wing securely and is better than the two dowels alone.
Old 09-14-2004, 12:02 PM
  #267  
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Default RE: Sig Mayhem 3D ARF

Man i like this plane!!! OS91 4 Stroke with pump APC 15X6 prop...30% heli...
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Old 09-14-2004, 12:04 PM
  #268  
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Default RE: Sig Mayhem 3D ARF

[quote]ORIGINAL: Gbee

Oops, I forgot the pics.

Notice I added some hardwood under the servo mounts on both servos to get the pushrod perpendicular to the elevators (and the futher aft the less depth for the servo).
[/quote

Thanks, Gbee.
Old 09-14-2004, 08:31 PM
  #269  
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Default RE: Sig Mayhem 3D ARF

However!!! The Seagull Co. Harrier is my favorite in the Hanger!! Saito 100 on a APC 16-4 30% Magun heli fuel TOTAL 3D Blast
Old 09-19-2004, 06:38 PM
  #270  
AIRPLANENUTS
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Default RE: Sig Mayhem 3D ARF

FINALLY! I flew my Mayhem for the first time this afternoon. I have had range check problems which I have been trying to correct ALL SUMMER LONG! I finally figured out the metal pushrod, even with nylon clevises, was causing the problem.

Anyway, although the wind was at 10 mph+ all afternoon, I enjoyed every minute of it. I will really wring it out as soon as I get a calm day. I am using an O.S. .91FX, and it seems like plenty of engine. It is inverted, but I have onboard full-time glow, so the engine never gave a minute's problem.

This thing really floats on approach! Anyone using spoilerons?
Old 09-20-2004, 06:59 PM
  #271  
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Default Harrier by Seagull Models

In response to owild1...you are obviously happy with your Seagull Harrier (not sure why you're posting that opinion here???) Well, I've never seen one up-close and personal, but I think I'd have bought one already but they are kinda...well..uummmm...ugly. I'll have to admit that I don't care for the current trend in clear monocoat...and many of these planes are finished symetrically top and bottom. Why? I'm a knucklehead and really benefit from having the bottom of the airplane significantly different from the top of the plane. I know I am not alone in this preference.

The pics I've studied looks like this plane is well thought-out...the re-enforcement in the tailfeathers looks to be stout and ought to be the stock set-up for planes like the Funtana 60-90. I am impressed

But I can't get passed its looks. I've even considered buying it and recovering it!

Oh well...Maybe I'll reconsider the recover idea???

I'm glad you brought it up in this thread...hmm...it gets me thinking.......

Thanks!

Robert
Old 09-20-2004, 07:54 PM
  #272  
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Default RE: Sig Mayhem 3D ARF

I still love my Mayhem, and yes The Harrier is butt ugly If you put on on those decals! With out em its kinda neat Last week end cracked my Sig in half epoxyed the fuse back together and had it up tonight she are the better now! Fuse is weak guys! Cant drop it in hard it wont take it...........but that Harrier will !!! Thinkin about slippin a Saito 180 in place on the 100 for even a bigger rush with the Mayhem
Old 09-28-2004, 05:44 AM
  #273  
joel_jones
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Default RE: Sig Mayhem 3D ARF

got a friend that bough 1,. installed a os 91 with pump.. perfect match.. he did install 2 servo's in the tail for the elevator. lot more response..

he can hoover on the deck with plenty of power to get out.. also is the slowest plane to land i have ever seen..

perfect plane to do 3d with and lands like a trainer.
[img][/img]http://www.flyingtigersrc.com/080104/080104j.jpg[img][/img]

smoke on.

joel
Old 09-29-2004, 07:02 PM
  #274  
Barry Cazier
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Default RE: Sig Mayhem 3D ARF

Just ordered a 3D Mayhem today from Tower. After reading most of this thread I feel it'll be a good plane. I'm using a YS 110FZ with digital servos on the feathers and 645 HiTec on wings. What do you think the weight will be? Also, you guys have scared me with the CG and landing. I fly a Funtana 90 and it lands terrible with a CG of approx. 7", although it flies really cool. It will almost do anything but is hard to land. I'm hoping the Mayhem is more friendly. What CG should I start with and still have good 3D capabilities.
This is a cool forum. It helps a lot for new plane owners.
Thanks.
Old 09-30-2004, 08:43 AM
  #275  
Stratos
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Default RE: Sig Mayhem 3D ARF

Mine came right at 8lbs with the 110, a tru turn aluminum spinner and a 2 cell Li-ion battery.
Start with the cg in the middle of the range to get a feel for the plane first and then move it back in small increments.

Right now I have to nudge it with a bit of down elevator to complete the landing. It tends to flare up just a bit as it bleeds speed
so I need to use a hair of down elevator to keep the nose in line for a 3 point landing.
If I take the spinner out the cg shifts enough to make the landings a nuisance without gaining anything 3D wise.

Otherwise, the thing is a blast

Stratos.-

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